Ronda Rousey deserves a rematch with Holly Holm after Holm's surprising victory late Saturday in Melbourne, Australia, UFC's leader said Sunday.

Dana White, the Ultimate Fighting Championship president, said he'll pursue a rematch between his former champion and the still-unbeaten Holm, who stands as the first-ever boxing and UFC champion.

"A rematch is what a lot of people want to see," White said after Holm (10-0) knocked out Rousey (12-1) early in the second round with a devastating left kick to the head that rendered the former champion briefly unconscious. "Obviously, biggest upset ever. When you look at how Ronda is revered — baddest woman on the planet — definitely.

"The rematch makes a lot of sense."

Holm, a former pro kickboxer, knocked Rousey out 59 seconds into the second round.

"The fight went down the way I thought it could go down," White said. "That's the way I expected Holly to fight. Obviously, I thought Ronda would have more answers."

White said he had planned for Rousey to next fight at UFC 200 in July. She's involved in a film project, starring in Patrick Swayze's former bouncer role in a remake of "Roadhouse." Rousey has earned an immediate rematch if she wants it, White said, but he wouldn't commit to a date.

"I don't think there's any rush," White said. "She still has a movie to film, doing all the things she has to do before she fights again. I wouldn't expect her back any time soon."

Rousey, a former judo Olympian, was attempting her seventh title defense. Instead, Holm, a 34-year-old veteran female boxer from Albuquerque, N.M., has the championship belt.

"There's been a lot of blood, sweat and tears, but it was all worth it," Holm said.

Rousey left the stadium to receive treatment for a concussion and facial cuts at a hospital and didn't attend the post-fight news conference.

"Obviously she's completely bummed out and depressed," White said.

Ever the promoter, White saw it as a special day.

"Tonight was one of those moments," White said. "These are the moments in fighting that make it so crazy and so fun. Tonight was one of those moments."